CN202118133U - Spindle device capable of preventing air bearing from failing - Google Patents
Spindle device capable of preventing air bearing from failing Download PDFInfo
- Publication number
- CN202118133U CN202118133U CN2011201941432U CN201120194143U CN202118133U CN 202118133 U CN202118133 U CN 202118133U CN 2011201941432 U CN2011201941432 U CN 2011201941432U CN 201120194143 U CN201120194143 U CN 201120194143U CN 202118133 U CN202118133 U CN 202118133U
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- pneumatic bearing
- offset
- main shaft
- shaft device
- barrier part
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- Expired - Lifetime
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims description 44
- 239000002826 coolant Substances 0.000 claims description 16
- 230000002964 excitative effect Effects 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
A spindle device capable of preventing an air bearing from failing comprises a mandrel unit, a hollow external barrel, a coil unit and at least one air bearing. The mandrel unit is arranged along an axial direction and provided with an exciting section, the hollow external barrel surrounds the mandrel unit along the axial direction and is provided with a surrounding peripheral surface, the coil unit is disposed between the exciting section and the external barrel, the air bearings are disposed between the mandrel unit and the external barrel, the surrounding peripheral surface is provided with a first positioning area and at least one first offset area, each first offset area is radially recessed compared with the first positioning area so as to form first offset, and the air bearings and at least one portion of each first offset area in the axial direction are overlapped mutually.
Description
Technical field
The utility model relates to a kind of main shaft, particularly relates to a kind of main shaft device that prevents that pneumatic bearing lost efficacy.
Background technique
Existing a kind of main shaft device that is applicable to the molding substrate machine (technology contents that is for example disclosed for TaiWan, China patent of invention I230640 number and novel patent M376377 number, M323365 number) normally utilizes a main shaft seat (or being called saddle) to be installed on the Z axle slide (for example novel patent of TaiWan, China M241941 number and the technology contents that is disclosed for M369614 number); As shown in Figure 1; This kind main shaft device generally comprise an axle unit 1, outer cover unit 2, one be arranged at coil unit 3 between this axle unit 1 and this outer cover unit 2, one and be arranged at preceding pneumatic bearing 4 between this axle unit 1 front end and this outer cover unit 2, one and be arranged at back pneumatic bearing 5 between this 1 rear end, axle unit and this outer cover unit 2, thrust bearing 6, the headstock unit 7 with these outer cover unit 2 sockets, and push rod 8.
So, though a saddle capable of using when mounted 9 bundles are lived this outer cover unit 2, and this main shaft device is locked on this Z axle slide (figure does not show); Yet this saddle 9 also can be passed to locking force F each element of main shaft device simultaneously, causes the element stress deformation; For instance, owing to this coil unit 3 is not centered on by this saddle 9 with this headstock unit 7 fully, therefore; The amount of deformation D of its stressed generation promptly can be less, adds the radial clearance original just bigger (for example 200 μ m) between this coil unit 3 and this axle unit 1, therefore; The stress deformation of this coil unit 3 can't impact the rotation of this axle unit 1; Likewise, the radial clearance between this headstock unit 7 and this push rod 8 is bigger, and its stress deformation can not interfered the telescopic moving of this push rod 8 when the tool changing program yet; On the contrary, owing to these back pneumatic bearing 5 complete these saddles 9 of periderm center on fully, therefore; The amount of deformation D of its stressed generation promptly can be bigger, adds this back pneumatic bearing 5 and belong to high precision parts, the working gas gap very little (generally being designed to 20 μ m) between itself and this axle unit 1; Therefore, the stress deformation of this back pneumatic bearing 5 promptly can cause air gap further to dwindle (for example being contracted to 5 μ m), influences the precision of this back pneumatic bearing 5; Cause this axle unit 1 by locked, and can't reach predetermined rotating speed.
Summary of the invention
The main shaft device that the purpose of the utility model is to provide a kind of prevented pneumatic bearing that reduces the stress deformation amount of pneumatic bearing to lose efficacy.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy, and comprises the outside barrier part of an axle unit, a hollow shape, a coil unit, and at least one pneumatic bearing.This axle unit axially is provided with along one, and has one excitatory section.The outside barrier part of this hollow shape is along should axially centering on this axle unit; This outside barrier part has one around side face; Should have one first positioning area around side face, and at least one first offset district, this first offset district is than one first offset of the recessed diametrically formation of this first positioning area.This coil unit is arranged between excitatory section of this axle unit and this outside barrier part.This pneumatic bearing is arranged between this axle unit and this outside barrier part, and this pneumatic bearing and this first offset district at least partly overlap each other on this is axial.
The main shaft device that the pneumatic bearing that can prevent the utility model lost efficacy, this outside barrier part be outer circumferential face around side face.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; This pneumatic bearing has an outer circumferential face; This outer circumferential face has second positioning area that is socketed in this outside barrier part; And second an offset district that does not contact this outside barrier part, this second offset district is than one second offset of the recessed diametrically formation of this second positioning area.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; This main shaft device that can prevent that pneumatic bearing lost efficacy comprises two pneumatic bearing; This axle unit has one and is positioned at this excitatory section front end before; Reach one and be positioned at this excitatory section rearward end afterwards; Said pneumatic bearing is defined as a preceding pneumatic bearing that is arranged between this front end and this outside barrier part respectively, and a back pneumatic bearing that is arranged between this rearward end and this outside barrier part, and this back pneumatic bearing and this first offset district at least partly overlap each other on this is axial.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy, and this first offset district centers on second positioning area and the part second offset district of this back pneumatic bearing on this is axial.
The main shaft device that the pneumatic bearing that can prevent the utility model lost efficacy, this outside barrier part has a shell, and a coolant jacket that is sheathed in this shell, wherein one of the outer circumferential face of said inner peripheral surface and this coolant jacket that is formed at this shell around side face.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; Should be formed at the inner peripheral surface of this shell around side face; And have two first offset districts; Axially between the said first offset district, this coolant jacket is socketed on this first positioning area to this first positioning area along this, but does not contact the said first offset district.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; This pneumatic bearing has an outer circumferential face; This outer circumferential face has second positioning area that is socketed in this coolant jacket; And second an offset district that does not contact this coolant jacket, this second offset district is than one second offset of the recessed diametrically formation of this second positioning area.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; This main shaft device that can prevent that pneumatic bearing lost efficacy comprises two pneumatic bearing; This axle unit has one and is positioned at this excitatory section front end before; Reach one and be positioned at this excitatory section rearward end afterwards; Said pneumatic bearing is defined as a preceding pneumatic bearing that is arranged between this front end and this outside barrier part respectively, and a back pneumatic bearing that is arranged between this rearward end and this outside barrier part, and this preceding pneumatic bearing, back pneumatic bearing at least partly overlap each other on this is axial with the said first offset district respectively.
The utility model can prevent the main shaft device that pneumatic bearing lost efficacy; Around second positioning area and the part second offset district of this preceding pneumatic bearing, another first offset district centers on second positioning area and the part second offset district of this back pneumatic bearing on this is axial on this is axial in one of them first offset district.
The beneficial effect of the utility model is: utilize this first offset district and this pneumatic bearing of centering on side face to overlap each other, block the stressed of this pneumatic bearing, to reduce the stress deformation amount of this pneumatic bearing.
Description of drawings
Fig. 1 is the cross-sectional schematic of existing a kind of main shaft device;
Fig. 2 is the cross-sectional schematic of the prevented pneumatic bearing of the utility model main shaft device one first preferred embodiment of losing efficacy;
Fig. 3 is the local enlarged diagram of Fig. 2;
Fig. 4 is the local enlarged diagram of Fig. 2;
Fig. 5 one is similar to the view of Fig. 2, explains that the stress deformation of this main shaft device distributes;
Fig. 6 is the cross-sectional schematic of the prevented pneumatic bearing of the utility model main shaft device one second preferred embodiment of losing efficacy;
Fig. 7 is the local enlarged diagram of Fig. 6;
Fig. 8 is the local enlarged diagram of Fig. 6;
Fig. 9 one is similar to the view of Fig. 6, explains that the stress deformation of this main shaft device distributes.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
About the aforementioned of the utility model and other technology contents, characteristics and effect, in the detailed description of following cooperation, can clearly understand with reference to two preferred embodiments of accompanying drawing.
Before proposing detailed description, be noted that in following explanation similar elements is to represent with identical numbering.
Consult Fig. 2,3,4; The utility model can prevent first preferred embodiment of the main shaft device that pneumatic bearing lost efficacy; This main shaft device comprises: the outside barrier part of axle unit 10, a hollow shape 20, coil unit 30, at least one pneumatic bearing, and a headstock unit 60.In the present embodiment, this main shaft device comprises two pneumatic bearing, and said pneumatic bearing is defined as pneumatic bearing 50 behind a preceding pneumatic bearing 40 and respectively.
This axle unit 10 is provided with along an axial X, and has one excitatory section 11, one front ends 12 before being positioned at this excitatory section 11, and the rearward end 13 after being positioned at this excitatory section 11.
Around this axle unit 10, this outside barrier part 20 has one around side face 21 to this outside barrier part 20 along this axial X, in the present embodiment, should be outer circumferential faces of outside barrier part 20 around side face 21.Should have one first positioning area 211 around side face 21, and one first offset district 212, this first offset district 212 is than one first offset d1 of the recessed diametrically formation of this first positioning area 211, and in the present embodiment, this first offset d1 is 150 μ m.It is understandable that; This outside barrier part 20 generally is formed with refrigerant channel and air flow channel; The refrigerant of the 60 inputs refrigerant channel of can flowing through produces the effect of cooling from this headstock unit, can flow to through the air flow channel of this outside barrier part 20 between this forward and backward pneumatic bearing 40,50 and this axle unit 10 from the air of these headstock unit 60 inputs; Produce the effect of bearings; And pneumatic bearing 40 has the function of radial support and axial thrust concurrently before being somebody's turn to do, and this is an existing technology, in this explanation no longer at length.
This coil unit 30 is arranged between excitatory section 11 of this axle unit 10 and this outside barrier part 20, rotates with respect to this outside barrier part 20 and can order about this axle unit 10.
Should preceding pneumatic bearing 40 be arranged between this front end 12 and this outside barrier part 20; This back pneumatic bearing 50 is arranged between this rearward end 13 and this outside barrier part 20; This forward and backward pneumatic bearing 40,50 has an outer circumferential face 41,51 respectively; Said outer circumferential face 41,51 has second positioning area 411,511 that is socketed in this outside barrier part 20 respectively, and second an offset district 412,512 that does not contact this outside barrier part 20, one second offset d2 of the recessed diametrically formation of the said second offset district 412,512 more said respectively second positioning areas 411,511; In the present embodiment, the said second offset d2 is respectively 150m.
This back pneumatic bearing 50 at least partly overlaps each other on this axial X with this first offset district 212, and in the present embodiment, this first offset district 212 centers on second positioning area 511 and the part second offset district 512 of this back pneumatic bearing 50 on this axial X.
This headstock unit 60 is arranged at after this back pneumatic bearing 50.
Whereby, as shown in Figure 5, the utility model is that a saddle capable of using 200 bundles firmly should outside barrier part 20 when mounted; And the utility model is locked on the Z axle slide (figure does not show) of a molding machine, in this process, though this saddle 200 also can be passed to locking force F each element of the utility model; Yet, owing to be formed with the said second offset district 412,512 respectively between this forward and backward pneumatic bearing 40,50 and this outside barrier part 20, and; This back pneumatic bearing 50 is to overlap each other with the first offset district 212 of this outside barrier part 20 on this axial X, and therefore, it is that locking force F capable of blocking is passed to this back pneumatic bearing 50 fully that this second offset district 512 cooperates this first offset district 212; In like manner, this second offset district 412 locking force F also capable of blocking are passed to this preceding pneumatic bearing 40 fully, so; Can reduce the stressed of this forward and backward pneumatic bearing 40,50, and bear most locking force F, therefore by this not high coil unit 30 of required precision; The amount of deformation D of these forward and backward pneumatic bearing 40,50 stressed generations promptly can reduce, and can not influence the precision of this forward and backward pneumatic bearing 40,50, lets this axle unit 10 can keep normal rotation; In addition; Though the amount of deformation D of these coil unit 30 stressed generations can be bigger,, the radial clearance between this coil unit 30 and this axle unit 10 original just bigger (for example 200 μ m); Therefore, the stress deformation of this coil unit 30 can't impact the rotation of this axle unit 10.
Via above explanation, can be again the advantage of the utility model be summarized as follows:
One, the first offset district 212 around side face 21 of the outside barrier part 20 of the utility model is to overlap each other with this back pneumatic bearing 50 at this axial X; Therefore; These first offset district, 212 the stressed of back pneumatic bearing 50 that are somebody's turn to do capable of blocking; And reduce the stress deformation amount of this back pneumatic bearing 50, and keep the precision of this back pneumatic bearing 50.
Two moreover; Be formed with the said second offset district 412,512 between this forward and backward pneumatic bearing 40,50 and this outside barrier part 20 respectively; Therefore; Should before pneumatic bearing 40, this second offset district 412 same capable of blocking should before pneumatic bearing 40 stressed, and reduce the stress deformation amount of this preceding pneumatic bearing 40; Should the back pneumatic bearing 50; This second offset district 512 cooperates 212 in this first offset district can block the stressed of this back pneumatic bearing 50 more; And further reduce the stress deformation amount of this back pneumatic bearing 50; Compared to existing technology, the utility model can effectively be kept the precision of this forward and backward pneumatic bearing 40,50, avoids this axle unit 10 by locked.
Consult Fig. 6,7,8, be one second preferred embodiment of the utility model, this second preferred embodiment is to be similar to this first preferred embodiment, and the difference of this second preferred embodiment and this first preferred embodiment is:
This outside barrier part 20 has a shell 22, and a coolant jacket 23 that is sheathed in this shell 22.
This shell 22 have one be formed at inner peripheral surface around side face 221; Should have one first positioning area 222 around side face 221; And two first offset districts 223,224, this axial X of these first positioning area, 222 these edges is between the said first offset district 223, between 224.The said first offset district 223,224 is respectively than one first offset d1 of the recessed diametrically formation of this first positioning area 222.
This coolant jacket 23 is socketed on this first positioning area 222, but does not contact the said first offset district 223,224.
This forward and backward pneumatic bearing 40,50 has an outer circumferential face 42,52 respectively; Said outer circumferential face 42,52 has second positioning area 421,521 that is socketed in this coolant jacket 23 respectively; And second an offset district 422,522 that does not contact this coolant jacket 23, one second offset d2 of the recessed diametrically formation of the said second offset district 422,522 more said respectively second positioning areas 421,521.
This forward and backward pneumatic bearing 40,50 at least partly overlaps each other on this axial X with the said first offset district 223,224 respectively; In the present embodiment; Around second positioning area 421 and the part second offset district 422 of this preceding pneumatic bearing 40, this first offset district 224 centers on second positioning area 521 and the part second offset district 522 of this back pneumatic bearing 50 on this axial X on this axial X in this first offset district 223.
Whereby; As shown in Figure 9, this second offset district 422 cooperates the locking force F of these first offset district, 223 these saddles 200 also capable of blocking to be passed to this preceding pneumatic bearing 40 fully, in like manner; This second offset district 522 cooperates this first offset district 224 locking force F also capable of blocking to be passed to this back pneumatic bearing 50 fully; So, also can reduce the stressed of this forward and backward pneumatic bearing 40,50, and bear most locking force F with this headstock unit 60 by this not high coil unit 30 of required precision.
What deserves to be mentioned is, in the present embodiment, should also can change the outer circumferential face that is formed at this coolant jacket 23 into around side face 221, let form this first positioning area and this first offset district on the outer circumferential face of this coolant jacket 23.
So, this second preferred embodiment also can reach purpose and the effect identical with above-mentioned first preferred embodiment.
In sum, the main shaft device that the prevented pneumatic bearing of the utility model lost efficacy not only can reduce the stress deformation amount of pneumatic bearing, and can prevent main shaft device by locked inefficacy, so can reach the purpose of the utility model really.
Claims (10)
1. the main shaft device that can prevent that pneumatic bearing lost efficacy comprises the outside barrier part of an axle unit, a hollow shape, a coil unit, and at least one pneumatic bearing, it is characterized in that:
This axle unit axially is provided with along one, and has one excitatory section;
The outside barrier part of this hollow shape; Along should axially centering on this axle unit, this outside barrier part has one around side face, should have one first positioning area around side face; And at least one first offset district, this first offset district is than one first offset of the recessed diametrically formation of this first positioning area;
This coil unit is arranged between excitatory section of this axle unit and this outside barrier part; And
This pneumatic bearing is arranged between this axle unit and this outside barrier part, and this pneumatic bearing and this first offset district at least partly overlap each other on this is axial.
2. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 1 is characterized in that: this outside barrier part be outer circumferential face around side face.
3. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 2; It is characterized in that: this pneumatic bearing has an outer circumferential face; This outer circumferential face has second positioning area that is socketed in this outside barrier part; And second an offset district that does not contact this outside barrier part, this second offset district is than one second offset of the recessed diametrically formation of this second positioning area.
4. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 3; It is characterized in that: this main shaft device that can prevent that pneumatic bearing lost efficacy comprises two pneumatic bearing; This axle unit has one and is positioned at this excitatory section front end before; Reach one and be positioned at this excitatory section rearward end afterwards; Said pneumatic bearing is defined as a preceding pneumatic bearing that is arranged between this front end and this outside barrier part respectively, and a back pneumatic bearing that is arranged between this rearward end and this outside barrier part, and this back pneumatic bearing and this first offset district at least partly overlap each other on this is axial.
5. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 4 is characterized in that: this first offset district centers on second positioning area and the part second offset district of this back pneumatic bearing on this is axial.
6. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 1; It is characterized in that: this outside barrier part has a shell; And a coolant jacket that is sheathed in this shell, wherein one of the outer circumferential face of said inner peripheral surface and this coolant jacket that is formed at this shell around side face.
7. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 6; It is characterized in that: the inner peripheral surface that should be formed at this shell around side face; And have two first offset districts; Axially between the said first offset district, this coolant jacket is socketed on this first positioning area to this first positioning area along this, but does not contact the said first offset district.
8. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 7; It is characterized in that: this pneumatic bearing has an outer circumferential face; This outer circumferential face has second positioning area that is socketed in this coolant jacket; And second an offset district that does not contact this coolant jacket, this second offset district is than one second offset of the recessed diametrically formation of this second positioning area.
9. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 8; It is characterized in that: this main shaft device that can prevent that pneumatic bearing lost efficacy comprises two pneumatic bearing; This axle unit has one and is positioned at this excitatory section front end before; Reach one and be positioned at this excitatory section rearward end afterwards; Said pneumatic bearing is defined as a preceding pneumatic bearing that is arranged between this front end and this outside barrier part respectively, and a back pneumatic bearing that is arranged between this rearward end and this outside barrier part, and this preceding pneumatic bearing, back pneumatic bearing at least partly overlap each other on this is axial with the said first offset district respectively.
10. the main shaft device that prevents that pneumatic bearing lost efficacy according to claim 9; It is characterized in that: around second positioning area and the part second offset district of this preceding pneumatic bearing, another first offset district centers on second positioning area and the part second offset district of this back pneumatic bearing on this is axial on this is axial in one of them first offset district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201941432U CN202118133U (en) | 2011-06-10 | 2011-06-10 | Spindle device capable of preventing air bearing from failing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201941432U CN202118133U (en) | 2011-06-10 | 2011-06-10 | Spindle device capable of preventing air bearing from failing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118133U true CN202118133U (en) | 2012-01-18 |
Family
ID=45459202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201941432U Expired - Lifetime CN202118133U (en) | 2011-06-10 | 2011-06-10 | Spindle device capable of preventing air bearing from failing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244559A (en) * | 2012-02-03 | 2013-08-14 | 达航工业股份有限公司 | Bushing type air bearing and main shaft device |
-
2011
- 2011-06-10 CN CN2011201941432U patent/CN202118133U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244559A (en) * | 2012-02-03 | 2013-08-14 | 达航工业股份有限公司 | Bushing type air bearing and main shaft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Taipei City, Taiwan, China Patentee after: Dar Harnq Industry Co., Ltd. Address before: Taipei City, Taiwan, China Patentee before: Darharnq Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |